Maths practice for 12-year-olds - page 252 of 347
Number of problems found: 6932
- Wall dimensions
The walls, which are in the shape of a square with a side of 24 km, are 107 m high and 27 m wide. Calculate their perimeter and area. - Repeating digits
There is a thousand one-digit number, which consists of repeating digits 123412341234. What remainder gives this number when dividing by nine? - Unadjusted clock
Matej was finding out how precisely the tower clock measures time. He came to the conclusion that if no one adjusted it on an ongoing basis, it would show completely exact time once every 200 days. a) Calculate by how many seconds the time measured by the - Linoleum cost
The schoolmaster has a classroom schedule where the linoleum needs to be replaced. The classroom floor is a 45 mm x 65 mm rectangle on a 1:200 scale plan. How much will linoleum cost if 1 square meter costs €13.80? - MO Z6-I-2 2017
Erica wanted to offer chocolate to her three friends. When she took it out of her backpack, she found that it was broken, as shown in the picture. (The marked squares are identical.) The girls agreed not to break the chocolate any further and drew lots to - Closest natural number Find the closest natural number to 4.456 to 44.56 and 445.6.
- Boys and girls
There are 28 girls in the hall. Boys make up 5/7 of all the children. How many children are there in total, and how many are boys? - Groups
In the 6th class, there are 60 girls and 72 boys. We want to divide them into groups so that the number of girls and boys is the same. How many groups can you create? How many girls will be in the group? - Gear train
A gear train is assembled from three gear wheels. The first has 165 teeth, the second 132 teeth, and the third 231, where the second engages with the first and the third with the second. The first and third do not touch. How many times per minute will all - Car distance
The car will travel 28 km in one hour. How far will it travel in two and a half hours? - Holiday trip
Paul is saving for the holiday trip. He received 1100 CZK from his father. He saved a fifth and received the rest 500 CZK from his mother. How much did his holiday trip cost? - Warmer weather
This morning the temperature was -6 °C. What was the temperature yesterday if it was three times warmer? - Football field area
A football field for an interstate match must be between 100 m and 110 m long and between 64 m and 75 m wide. Calculate the area of the smallest and largest fields corresponding to the conditions. - Combine / add term
Combine like terms 4c+c-7c - Container
The container has a cylindrical shape, the base diameter is 0.8 m, and the area of the base is equal to the area of the wall. How many liters of water can we pour into the container? - Excavation
The excavation for the cottage's base measures 4.5 m x 3.24 m x 60 cm. The excavated soil will increase its volume by one-quarter. Calculate the volume of excavated soil. - Missing pupils There are 32 pupils in the class. How many pupils were missing from school if 12.5% were absent?
- Box metal
A box is shaped like a cube with an edge of 52 cm. How many m² of sheet metal are needed to make the box with a lid? Add 5% for the folds of the lid and walls. - Computer course
There are 32 pupils in the class. A quarter of them attend a computer course. What percentage of the total number of students in the class do not attend a computer course? - Lunch cost In a specific Czech company, each employee pays 40% of the lunch price, and the remaining CZK 33 is contributed by the employer. What is the cost of lunch?
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
